摘要

Let {X,X (n) , n a (c) 3/4 1} be a sequence of independent identically distributed random variables with EX = 0 and assume that EX (2) I(|X| a (c) 1/2 x) is slowly varying as x -%26gt; a, i.e., X is in the domain of attraction of the normal law. In this paper a Strassen-type strong approximation is established for self-normalized sums of such random variables.